1. Department of Orthopaedic Surgery; Skaraborg Hospital; Skövde Sweden
2. Geriatric Medicine; Department of Internal Medicine and Clinical Nutrition; Institute of Medicine; University of Gothenburg; Gothenburg Sweden
3. Department of Medicine Huddinge; Karolinska Institute; Stockholm Sweden
4. Institute for Health and Ageing; Catholic University of Australia; Melbourne Vic. Australia
5. School of Bioscience; University of Skövde; Skövde Sweden
6. Geriatric Medicine; Sahlgrenska University Hospital; Mölndal Sweden